問題詳情
2. 關於萬有引力造成的運動，下列敘述何者正確？
(A)行星繞日公轉，在近日點上加速度的大小有極大值
(B)人造衛星受行星的萬有引力作用，其軌道必為正圓形
(C)人造衛星繞地球運行時，其軌道平面必與地球自轉軸垂直
(D)人造衛星繞地球運行時，地心必位於軌道平面上
(E)雙星系統中，星球所受的向心力來自於此雙星系的質量中心。
(A)行星繞日公轉，在近日點上加速度的大小有極大值
(B)人造衛星受行星的萬有引力作用，其軌道必為正圓形
(C)人造衛星繞地球運行時，其軌道平面必與地球自轉軸垂直
(D)人造衛星繞地球運行時，地心必位於軌道平面上
(E)雙星系統中，星球所受的向心力來自於此雙星系的質量中心。
參考答案
答案：A,D
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)
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